package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    private static final Logger log = LoggerFactory.getLogger(EmployeeServiceImpl.class);
    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //进行md5加密，然后再进行比对
        password=DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }


    /*
    * 新增员工
    * */
    @Override
    public void save(EmployeeDTO employeeDTO) {
    System.out.println("当前线程的id："+Thread.currentThread().getId());

    Employee employee= new Employee();

    //对象属性拷贝
    BeanUtils.copyProperties(employeeDTO,employee);//前面是被拷贝对象，后面是要复制属性的对象

    //设置账户状态,使用StatusConstant常量类，不仅可以表示员工的状态，还能表示菜品的状态等等
    employee.setStatus(StatusConstant.ENABLE);

    //设置密码,也要进行md5加密
    employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

//    //设置时间和修改时间
//    employee.setCreateTime(LocalDateTime.now());
//    employee.setUpdateTime(LocalDateTime.now());
//
//    //设置当前用户的创建人id和修改人id
//    employee.setCreateUser(BaseContext.getCurrentId());
//    employee.setUpdateUser(BaseContext.getCurrentId());

    employeeMapper.insert(employee);
    }

    /**
     * 分页查询员工信息
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult get(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10
        //开始分页查询,第一个是页码，第二个是每页显示记录数
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //调用mapper方法，必须使用Page类来接收返回值
        Page<Employee> page = employeeMapper.select(employeePageQueryDTO);
        //通过page获取
        long total = page.getTotal();
        List<Employee> list = page.getResult();
        return new PageResult(total,list);
    }

    /**
     * 修改员工状态
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {

        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);//动态更新
    }

    /**
     * 根据员工id查询信息
     * @param id
     * @return
     */
    @Override
    public Employee selectEmployeeById(Long id) {

        return employeeMapper.selectById(id);
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);//前面是被拷贝对象，后面是要复制属性的对象

//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        log.info("要修改的信息{}",employee);
        employeeMapper.update(employee);
    }

}
